Lighting fixture



FIG. 1 is a perspective view of a lighting fixture, showing the bottom, one side and the rear of the new design; and,

FIG. 2 is a perspective view of the lighting fixture showing the bottom, the opposite side and the front of the new design.

The broken lines in FIGS. 1 and 2 are for the purpose of illustrating environmental structure and form no part of the claimed design. 

The ornamental design for a lighting fixture, as shown and described. 